CVE-2026-2030Network attack vector

Contributor-level stored XSS via single-quote attribute breakout

Published May 27, 2026 · Updated May 27, 2026

Stored XSS in Livemesh Addons for WPBakery Page Builder 3.9.4 and earlier allows remote authenticated users to inject scripts via shortcodes. The lvca_carousel and lvca_posts_carousel handlers JSON-encode shortcode attributes but place them in single-quoted data-settings attributes without HTML-attribute escaping, so an injected single quote escapes the attribute. Contributor-level access is required, and the stored script executes in the browser of each user who views the crafted page.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Livemesh Addons for WPBakery Page Builder 3.9.4 and earlier allows remote authenticated users to inject scripts via shortcodes. The lvca_carousel and lvca_posts_carousel handlers JSON-encode shortcode attributes but place them in single-quoted data-settings attributes without HTML-attribute escaping, so an injected single quote escapes the attribute. Contributor-level access is required, and the stored script executes in the browser of each user who views the crafted page.

The record

CVE
CVE-2026-2030
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Livemesh Themes
Product
Livemesh Addons for WPBakery Page Builder
Classifications
T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.9.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Livemesh Themes · Livemesh Addons for WPBakery Page Builderversion=0 <=3.9.4

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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